Scale Factors Area

If a square's side lengths are halved (scale factor of 1/2 is used), then which of the following statements about its area will be true?

• The ratio of the old area to the new area will be 1/8

• The ratio of the old area to the new area will be 1/2.

• The ratio of the old area to the new area will be 1/4.

• The ratio of the old area to the new area will be 4/1.

Tags

CCSS.7.G.A.1

If a square's side lengths enlarged by a SF of 2, then which of the following statements about its area will be true?

• The new area will be 4 times the old area.

• The new area will be 16 times the old area.

• The new area will be 1/4 of the old area.

• The new area will be 2 times the old area.

Tags

CCSS.7.G.A.1

If a circle's radius is quadrupled (factor of 4), then which of the following statements about its area will be true?

• The new area will be 16 times the old area.

• The new area will be 8 times of the old area.

• The new area will be 64 times the old area.

• The new area will be 4 times the old area.

Tags

CCSS.7.G.B.4

If a square's side lengths are doubled, then which of the following statements about its area will be true?

• The new area will be 4 times the old area.

• The new area will be 16 times the old area.

• The new area will be 1/4 of the old area.

• The new area will be 2 times the old area.

Tags

CCSS.7.G.A.1

Amanda made a scale drawing of a square garden, which has a side length of 25 feet. She used the scale 2 inches = 5 feet.

What will be the area of the scale drawing?

• 10 in²

• 25 in²

• 100 in²

• 484 in²

Tags

CCSS.7.G.A.1

What is the area of the scaled copy?

• 20 sq in

• 42 sq in

• 49 sq in

• 294 sq in

Tags

CCSS.7.G.A.1

What is the scale factor used to get from the small rectangle to the large rectangle?

• 4

• .25

• 21

• 5/7

Tags

CCSS.7.G.A.1

Triangle PRQ is the pre-image. Triangle SUT is the image. What is the scale factor to get from the small triangle to the large triangle?

• 2

• 1.5

• .67

• 8/12

Tags

CCSS.7.G.A.1

If the scale factor to get from the small rectangle to the large rectangle is 4 and the perimeter of the small rectangle is 24 units. What is the perimeter of the larger rectangle?

• 112

• 24

• 96

• 32

Tags

CCSS.7.G.A.1